• Extreme Heat
  U.S. Environmental Protection Agency
• Heat: A Major Killer
  Office of Climate, Water, and Weather Services, National Weather Service, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
• Resource Guide for Disaster Medicine and Public Health: Heat Literature
  Disaster Information Management Research Center, U.S. National Library of Medicine, National Institutes of Health

• A Guide to the UV Index (PDF, 1.1 KB)
  U.S. Environmental Protection Agency
• Air Quality Index (AQI) – A Guide to Air Quality and Your Health
  AIRNow Partners
• Climate Change and Extreme Heat Events (PDF, 3.3 MB)
  Centers for Disease Control and Prevention, U.S. Department of Health and Human Services
• Extreme Heat
  Centers for Disease Control and Prevention, U.S. Department of Health and Human Services
• Extreme Heat and Human Health (Guidelines for Professionals)
  Also available in French.
  Health Canada
• Medical Aspects of Harsh Environments, Volume 1
  Scroll to chapters on Hot Environments
  U.S. Army Medical Department
• Public Health Advice on Preventing Health Effects of Heat
  World Health Organization
• UV Radiation
  National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, U.S. Department of Health and Human Services

• Extreme Heat Events
  Includes "Minnesota Extreme Heat Toolkit" and "Extreme Heat Training Module."
  Minnesota Department of Health
• Excessive Heat Events Guidebook (PDF, 709.6 KB)
  U.S. Environmental Protection Agency
• Heatwave Plan for England 2013: Supporting Vulnerable People Before and During a Heatwave – Advice for Care Home Managers and Staff (PDF, 64.2 KB)
  Public Health England, U.K. Department of Health
• Heat–health action plans
  Also available in Russian (PDF, 2.8 MB).
  World Health Organization
• Heatwave Plan for England 2013: Supporting Vulnerable People before and during s Heatwave – Advice for Health and Social Care Professionals (PDF, 264.3 KB)
  Public Health England, U.K. Department of Health
• Heatwave Planning Guide: Development of Heatwave Plans in Local Councils in Victoria (PDF, 1.8 MB)
  Victorian Government Department of Human Services, Environmental Health Unit, Rural and Regional Health and Aged Care Services Division
• Improving Public Health Responses to Extreme Weather/Heat Waves – EuroHEAT (PDF, 1.5 MB)
  World Health Organization, Regional Office for Europe
• Preparing for and Responding to Extreme Heat and Cold Events
  Centers for Disease Control and Prevention, U.S. Department of Health and Human Services
• Public Health Advice on Preventing Health Effects of Heat: New and Updated Information for Different Audiences (PDF, 2.1 MB)
  World Health Organization, Regional Office for Europe

• Heat Safety Tool
  Also available in Spanish.
  App for Android, Blackberry and iPhone.
  Occupational Safety and Health Administration, U.S. Department of Labor
• Heat Stress
  National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, U.S. Department of Health and Human Services
• OSHA's Campaign to Prevent Heat Illness in Outdoor Workers
  Also available in Spanish.
  Occupational Safety and Health Administration, U.S. Department of Labor
• Using the Heat Index: A Guide for Employers
  Also available in Spanish.
  Occupational Safety and Health Administration, U.S. Department of Labor

Children

• Extreme Heat: Effects on Children and Pregnant Women
  U.S. Environmental Protection Agency

Older Adults

• Extreme Heat Events
  U.S. Environmental Protection Agency

• MedlinePlus, U.S. National Library of Medicine, National Institutes of Health, U.S. Department of Health and Human Services
  Also in Spanish. See Multi-language Resources section.
  • Dehydration
  • Heat Illness
  • Sun Exposure

• Chaleur accablante et santé humaine (Extreme Heat and Human Health)
  Health Canada
• Heat–health action plans
  Available in Russian (PDF, 2.8 MB).
  World Health Organization
• Herramienta de Seguridad en el Calor (Heat Safety Tool)
  App for Android, Blackberry and iPhone.
  Occupational Safety and Health Administration, U.S. Department of Labor
• La Campaña de OSHA para Prevenir las Enfermedades a Causa del Calor en Trabajadores al Aire Libre (OSHA's Campaign to Prevent Heat Illness in Outdoor Workers)
  Occupational Safety and Health Administration, U.S. Department of Labor
• Protección de los Trabajadores contra las Enfermedades por Calor (Protecting Workers from Heat Illness)
  National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, U.S. Department of Health and Human Services
• Uso del Índice de Calor: Una Guía para los Empleadores (Using the Heat Index: A Guide for Employers)
  Occupational Safety and Health Administration, U.S. Department of Labor
• MedlinePlus en español, National Library of Medicine, National Institutes of Health
  
  • Deshidratación (Dehydration)
  • Enfermedades causadas por el calor (Heat Illness)
  • Exposición al sol (Sun Exposure)

• Excessive Heat and Your Pets and Livestock
  Center for Food Security & Public Health, Iowa State University